ci: Use go 1.20.3 for release workflow

Author: cetteup

.github/workflows/release.yaml

@@ -42,7 +42,7 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           goos: ${{ matrix.goos }}
           goarch: ${{ matrix.goarch }}
-          goversion: 1.19.5
+          goversion: 1.20.3
           project_path: cmd/update-plex-ipv6-access-url
           ldflags: "-X 'main.buildTime=${{ needs.meta.outputs.date }}' -X 'main.buildCommit=${{ github.sha }}' -X 'main.buildVersion=${{ github.ref_name }}'"
           sha256sum: true